diff --git a/src/Stars.Data/Model/Metadata/Bka/BkaMetadataExtractor.cs b/src/Stars.Data/Model/Metadata/Bka/BkaMetadataExtractor.cs
index 9bd4b622..ee05ef4d 100644
--- a/src/Stars.Data/Model/Metadata/Bka/BkaMetadataExtractor.cs
+++ b/src/Stars.Data/Model/Metadata/Bka/BkaMetadataExtractor.cs
@@ -544,7 +544,7 @@ protected virtual IAsset[] GetMetadataAssets(IAssetsContainer container, IEnumer
 
         protected virtual IAsset GetTopZipAsset(IItem item)
         {
-            IAsset zipAsset = FindFirstAssetFromFileNameRegex(item, @"^(?!.*(S2A_|S2B_)).*\.zip$");
+            IAsset zipAsset = FindFirstAssetFromFileNameRegex(item, @"^(?!.*S2[ABC]_).*\.zip$");
             return zipAsset;
         }
 
diff --git a/src/Stars.Data/Model/Metadata/Sentinels/Sentinel1/S1L1CalibrationType.cs b/src/Stars.Data/Model/Metadata/Sentinels/Sentinel1/S1L1CalibrationType.cs
index 3daef5b7..be05f014 100644
--- a/src/Stars.Data/Model/Metadata/Sentinels/Sentinel1/S1L1CalibrationType.cs
+++ b/src/Stars.Data/Model/Metadata/Sentinels/Sentinel1/S1L1CalibrationType.cs
@@ -200,7 +200,10 @@ public enum missionIdType {
         
         /// <remarks/>
         S1B,
-        
+
+        /// <remarks/>
+        S1C,
+
         /// <remarks/>
         ASA,
     }
diff --git a/src/Stars.Data/Model/Metadata/Sentinels/Sentinel1/S1L1NoiseType.cs b/src/Stars.Data/Model/Metadata/Sentinels/Sentinel1/S1L1NoiseType.cs
index c9822309..afa7e9af 100644
--- a/src/Stars.Data/Model/Metadata/Sentinels/Sentinel1/S1L1NoiseType.cs
+++ b/src/Stars.Data/Model/Metadata/Sentinels/Sentinel1/S1L1NoiseType.cs
@@ -188,6 +188,9 @@ public enum missionIdType {
         /// <remarks/>
         S1B,
         
+        /// <remarks/>
+        S1C,
+        
         /// <remarks/>
         ASA,
     }